ec602-chapter 1 6displaydevices

8/10/2019 EC602-Chapter 1 6DisplayDevices

http://slidepdf.com/reader/full/ec602-chapter-1-6displaydevices 1/66

EC602 COMPUTER SYSTEMDIAGNOSIS

AND MAINTENANCE

1 MSZ Dis12



Chapter 1_6PERSONAL COMPUTERCOMPONENTS

Computer System Diagnosis and

Maintenance2

MSZ Dis12



Display DevicesMSZ Dis12

3 1.1.6-Display Devices



Devices

MSZ Dis12




VGA Port

MSZ Dis12




DVI Port

MSZ Dis12




TFT vs. CRT

MSZ Dis12

7 1.1.7-TFT vs CRT



CRT Monitor

MSZ Dis12

8 1.1.7-TFT vs CRT



TFT Monitor

MSZ Dis12

9 1.1.7-TFT vs CRT



Comparison CRT vs TFTSize and Shape

TFT monitors are thin and lightweight, whereas CRT monitors arebulky and heavy. This results in the TFT monitor being mucheasier on the eye as well as taking up a lot less space. A CRT

monitor needs extra room inside the casing, as it needs toproject a beam onto the screen to display pixels. The TFT monitordoes not need to do this, as the technology manipulates liquidcrystals to create an image. This is why all laptops have TFTdisplays, as they need to be thin and easy to carry.

Response Time The response time on a CRT monitor is much better than a TFT.

Response time is important because it measures how long it

takes for pixels displayed on the screen to change. A slowerresponse time will have an impact on gaming, as the frequentchanges on the display may be too much for some TFT monitorsto handle.

MSZ Dis12

10 1.1.7-TFT vs CRT



Comparison CRT vs TFTPower Consumption

TFT monitors consume much less power. A 15-inch CRT monitor consumesapproximately 100 watts, but a TFT monitor of the same size only consumes 30watts. This means that the CRT monitor could end up costing more in the longrun through electricity bills. A CRT monitor needs more power, as it needs to

shoot a concentrated ray onto the glass screen to display images. The TFTmonitor needs to electrically alter a vast number of tiny l iquid crystals to displayan image, which requires less power.

Color Display CRT monitors display sharper and clearer colors due to their superior response

time. The lack of a decent color response may make TFT monitors undesirable tographic artists or designers, who will need the brighter color display of a CRT. TheCRT monitor will also display color better in videos and games.

Price CRT monitors are cheaper than TFTs when you are shopping for a standard sized

screen, but if you are looking for a monitor over 30 inches you may struggle tofind a CRT display, as they require a large amount of electricity. The bigger theCRT screen, the more power it needs. Once the monitor gets very big, thescreen needs an excessive amount of power and will have an impact on yourutility bill.

MSZ Dis12

11 1.1.7-TFT vs CRT



Future Display

MSZ Dis12

12 1.1.7-TFT vs CRT



Input Devices

1.1.8-Input Devices13

MSZ Dis12



Keyboard

MSZ Dis12

14 1.1.8-Input Devices



Keyboard Types

Keyboard Layout

QWERTY & Dvorak

Number of Keyboard The 83-key keyboard (PC/XT)

The 84-key keyboard (PC/AT)

The 102-key keyboard, called the extended

keyboard

The 105-key Microsoft Windows 95-compatiblekeyboard

Keyboard’s Cable Connector

Serial, Parallel, USB, WirelessMSZ Dis12




QWERTY Keyboard Layout

MSZ Dis12




Dvorak Keyboard Layout

MSZ Dis12




Keyboard’s Cable Connector

MSZ Dis12


http://4.bp.blogspot.com/_6OW0aKMKsGg/SmaXDhm9sLI/AAAAAAAAAA8/Z2rpqnI5Pwc/s1600-h/keyboard+wireless.JPG



Keyboard Adaptor & Others

MSZ Dis12




Future Keyboard!

MSZ Dis12




Mouse

MSZ Dis12




Mouse Connector

MSZ Dis12

23

Serial Connector

PS/2 Connector

USB Connecor

1.1.8-Input Devices



Optical Mouse

MSZ Dis12




Trackball

MSZ Dis12




Wireless mouse

MSZ Dis12


A wireless mouse uses radiofrequency (RF) broadcasts towork. The mouse contains atransmitter, which sends radiosignals about the mouse's actionsto the computer. The transmitter isvery lightweight and is low-powered enough to run onbatteries. The computer isconnected to a radio receiver,which receives the mouse's RFtransmissions, decodes them and

sends the data along to themouse driver software. Thereceiver can be an externaldevice plugged into a computeror an internal component



Future Mouse

MSZ Dis12




Input Devices

MSZ Dis12




Biometric

MSZ Dis12




Adapter Cards

MSZ Dis12

31 1.1.9-Adapter Cards



Types of PCI Cards

MSZ Dis12




Example of PCI Cards

MSZ Dis12

33

”Sound Card” ”Network Card”

1.1.9-Adapter Cards



PCI-e

MSZ Dis12




PCI-X

MSZ Dis12




Port and Cable

MSZ Dis12

36 1.1.10-Port and Cable

1 1 10 P t d C bl



MSZ Dis12

37

PS2 Mouse Used to connect a PS/2 pointing device.PS2 Keyboard Used to connect a PS/2 keyboard.Parallel Port (LPT1) Used to connect printers or other parallel communications devices.Serial Port Used to connect serial devices such as mice or (COM1) fax/modems.VGA Port Connect your monitor to the VGA port.

1394a Port Use the 1394a port to connect to any firewire device.LAN Port Used to connect an RJ-45 cable to a Network hub or router.USB Ports Used to connect USB devices such as printers, scanners cameras et...Audio Ports Used to connect audio devicesA. Center & Woofer, B. Back Surround, C. Side Surround, D. Line-in, E. Front Out,

F. Mic_in Rear

1.1.10-Port and Cable

1 1 10 P t d C bl



Input/Output Port

MSZ Dis12


1 1 10 P t d C bl



Port Comparison

MSZ Dis12


1 1 10 P t d C bl



Serial Port Specifications

MSZ Dis12


1 1 10 Port and Cable



Serial Port Specifications

MSZ Dis12





Port Speeds

MSZ Dis12





MSZ Dis12


44 1 1 10 Port and Cable



USB Speeds

MSZ Dis12





Cable IDE for FDD

MSZ Dis12





Parallel Port

MSZ Dis12

46

LPT pin out

1.1.10-Port and Cable

47 1 1 10-Port and Cable

http://upload.wikimedia.org/wikipedia/commons/e/e1/25_Pin_D-sub_pinout.svg



USB Ports

MSZ Dis12





USB Host Controller

MSZ Dis12





MSZ Dis12

49 1.1.10 Port and Cable




MSZ Dis12





IEEE 1394 Firewire

MSZ Dis12





Infra-Red

MSZ Dis12


Although IR is cheaper and has less interference than RF, it

requires a direct optical connection between the peripheral andIR receiver. This technology is most often used when a wirelessperipheral can remain stationary and in line with the IR receiver..Since keyboards can remain fairly static while being used, thereare IR keyboards available for computer users that cannot use RFtechnology due to interference.




Bluetooth

MSZ Dis12


Bluetooth utilizes RF and, like other RF devices, uses frequency hoppingin the 2400 MHz band. Bluetooth is the only RF technology currently

used for wireless mouses and keyboards that is standardized acrossmanufacturers. Since Bluetooth was designed specifically forconnecting wireless devices such keyboards and mouses, thesedevices use comparatively little power and are more resilient againstinterference


http://id.wikipedia.org/wiki/Berkas:Bluetooth_headset.jpg

http://id.wikipedia.org/wiki/Berkas:Bluetooth-logo.svg



DVI Port

MSZ Dis12

54 0 C

55 1.1.11-Cooling System



Cooling System

MSZ Dis12

55 g y




Computer CasesComputer case (chassis)

Houses power supply, motherboard, cards,

drives Panel switches/lights to control/monitor PC

Ports connecting cables to motherboard

Mounted on front, top, side, rear

Match power supply to system electricalneeds

MSZ Dis12

56 g y




Form Factor Computer Cases

Desktop cases

Motherboard on bottom; power supply to

the rear Tower cases

Up to 2 feet high; can contain several drives

Notebook cases

Used for all portables; includes desktopcomponents

MSZ Dis12

g y




Form Factor Computer Cases

MSZ Dis12

g y




Air Cooling Computer Cases

MSZ Dis12

Figure 4-8 Improved airflow in a BTX case and

motherboard makes it unnecessary to have a fan

on top of the processor

60



CPU Cooling System

MSZ Dis12




Liquid Cooled CPU

MSZ Dis12




MSZ Dis12




Laptop Cooling Elements

MSZ Dis12

1.1.12-Select Motherboard65



Select Motherboard Types of processor

Types of memory

Types of graphic card slot

MSZ Dis12

66 1.1.12-Select Motherboard

ec602-chapter 1 6displaydevices

Documents